: Available at eneba.com for $3.94 $19.99 .
This will grant you the "New Steam Version," which is necessary for online play as original servers have been shut down. To Unlock Bonus Content (Retail Code) : Available at eneba
If you are holding onto that old retail code, treat it like gold! Register it on Steam immediately to future-proof your purchase. And if you’ve lost the code, don't stress—a digital copy is just a few dollars away and will save you the headache of trying to get 15-year-old DRM software to run on a modern PC. Register it on Steam immediately to future-proof your
G2A, Kinguin, CDKeys (grey market). While sometimes cheaper, keys from these sites may be region-locked, revoked later, or already used. While sometimes cheaper, keys from these sites may
: On a small piece of paper or card included inside the game box. Steam Community Using Retail Keys on Steam